Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash flow from operating activities:
Net earnings	$ 171,285	$ 124,474
Adjustments to reconcile net earnings to cash provided by operations:
Depreciation	96,966	84,010
Amortization of deferred policy acquisition costs	4,778	4,184
Change in allowance for losses on trade receivables	(61)	22
Change in allowance for inventory reserves	(248)	(1,760)
Net gain on sale of real and personal property	(45,984)	(22,959)
Net (gain) loss on sale of investments	(1,453)	(874)
Deferred income tax	18,866	12,407
Net change in other operating assets and liabilities:
Reinsurance recoverables and trade receivables	(19,349)	(717)
Inventories	(140)	(561)
Prepaid expenses	56,624	5,368
Capitalization of deferred policy acquisition costs	(7,137)	(6,575)
Other assets	10,111	(6,814)
Related party assets	5,666	8,089
Accounts payable and accrued expenses	51,912	94,004
Policy benefits and losses, claims and loss expenses payable	11,669	(9,878)
Other policyholders' funds and liabilities	4,468	1,827
Deferred income	8,342	7,683
Related party liabilities	1,438	1,878
Net cash provided by operating activities	367,753	293,808
Cash flow from investing activities:
Property, plant and equipment	(452,572)	(343,988)
Short term investments	(73,517)	(62,293)
Fixed maturities investments	(47,072)	(69,426)
Equity securities	(967)	(3,281)
Preferred stock	(2)	(2)
Real estate	(23)	(4,211)
Mortgage loans	(82,839)	(5,069)
Proceeds from sale of:
Property, plant and equipment	194,133	128,989
Short term investments	88,332	62,631
Fixed maturities investments	30,340	25,624
Equity securities	$ 799	2,009
Preferred stock		1,000
Mortgage loans	$ 14,306	12,069
Net cash used by investing activities	(329,082)	(255,948)
Cash flow from financing activities:
Borrowings from credit facilities	88,206	207,152
Principal repayments on credit facilities	$ (82,797)	(52,464)
Debt issuance costs		(2,422)
Capital lease payments	$ (33,974)	(18,007)
Leveraged Employee Stock Ownership Plan	929	87
Investment contract deposits	39,252	37,892
Investment contract withdrawals	(13,215)	(11,551)
Net cash provided by (used in) financing activities	(1,599)	160,687
Effects of exchange rate on cash	(3,360)	(1,074)
Increase (decrease) in cash and cash equivalents	33,712	197,473
Cash and cash equivalents at the beginning of period	441,850	495,112
Cash and cash equivalents at the end of the period	$ 475,562	$ 692,585